Everyday tools, built to get out of your way.
Fesaer started from a simple frustration: needing a quick calculator or converter and landing on a page buried in pop-ups before finding a single usable button. So Fesaer is built the other way round — every tool loads fast, works instantly, and asks nothing of you before you can use it.
Fesaer.buzz hosts a growing set of free calculators, unit converters, generators and lightweight AI writing utilities. Each one runs entirely in your browser using plain JavaScript — nothing you type is uploaded to a server or stored anywhere.
Found a bug, or want a tool added? Visit the contact page — we read every message.